122 HOLLAND AND TIPPER : INDIAN GEOLOGICAL TERMINOLOGY. 



Venkatpur sandstones.— A sub- division of the Sullavais distin- 

 guished by W. King (Mem., Geol. Surv., Ind., XVIII, 229, 1881), 

 and composed of sahnon-red or chocolate-coloured sandstones, 

 blotched with white and buff colour. Named from the village 

 of Venkatpur (18° 15' ; 80° 3') in the Godavari district. 



Vindhyan system.— Proposed by T. Oldham (Joum. As. Soc., Beng., 

 XXV, 249, 1856) from the Vindhyan range in Central India, 

 where the rocks are well developed. Originally divided into — 



3. Bhander. 



2. Rewah. 

 1. Kaimur. 



Below these divisions of the original Vindhyans vwere found a 

 series of limestones, shales and sandstones which were named 

 Semri in Bundelkhand (H. B. Medlicott, Mem., Geol. Surv., Ind., 

 II, 6, 1860) and Sub-Kaimur in the Son valley (H. B. Medlicott, 

 quoted by T. Oldham, Joum. As. Soc., Beng., XXV, 253, 1856 ; 

 Mem., Geol. Surv., Ind., II, 303, 1860). In the Annual Report, 

 Geol. Surv., Ind., for 1864-1865 (p. 5), T. Oldham refers to the 

 Sub-Kaimurs as if they were then known by the name Lower 

 Vindhyan, but no formal announcement of the name seems to 

 have been made, and the term was accepted by F. R. Mallet as 

 then well known in 1869 {Mem., Geol. Surv., Ind., VII, 27). 

 Mallet's classification was as follows : — 



Upper Vindhyans — 

 Upper Bhander 



Lower Bhander 



Upper Rewah 

 Lower Rewah 



Upper Kaimur 



Lower Kaimur 



Lower Vindhyans — 

 11. Limestone. 

 10. Shale. 



9. Limestone. 



8. Shale, sandstone. 



Upper Bhander sandstone. 

 r Sirbu shales. 

 \ Lower Bhander sandstone, 

 i Bhander limestone. 

 (^ Gamirgarh shales. 



Upper Rewah sandstone. 

 ( Jhiri shales. 

 1 Lower Rewah sandstone. 

 (^ Panna shales. 

 f Upper Kaimur sandstone. 

 ( Kaimur conglomerate. 

 C Bijaigarh shales. 

 (.Lower Kaimur sandstones. 



